Commit 44b94828 authored by Chunfeng Yun's avatar Chunfeng Yun Committed by Greg Kroah-Hartman
Browse files

usb: xhci-mtk: add a function to get bandwidth boundary 



This is used to simplify unit test.

Signed-off-by: default avatarChunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/805b3ba66c2f02a52de4440212519aaa58463039.1615170625.git.chunfeng.yun@mediatek.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 338af695

drivers/usb/host/xhci-mtk-sch.c

+20 −7
Original line number Diff line number Diff line
@@ -37,6 +37,25 @@ static int is_fs_or_ls(enum usb_device_speed speed) 
	return speed == USB_SPEED_FULL || speed == USB_SPEED_LOW;

}



static u32 get_bw_boundary(enum usb_device_speed speed)

{

	u32 boundary;



	switch (speed) {

	case USB_SPEED_SUPER_PLUS:

		boundary = SSP_BW_BOUNDARY;

		break;

	case USB_SPEED_SUPER:

		boundary = SS_BW_BOUNDARY;

		break;

	default:

		boundary = HS_BW_BOUNDARY;

		break;

	}



	return boundary;

}



/*

* get the index of bandwidth domains array which @ep belongs to.

*
@@ -579,13 +598,7 @@ static int check_sch_bw(struct usb_device *udev, 
			break;

	}



	if (udev->speed == USB_SPEED_SUPER_PLUS)

		bw_boundary = SSP_BW_BOUNDARY;

	else if (udev->speed == USB_SPEED_SUPER)

		bw_boundary = SS_BW_BOUNDARY;

	else

		bw_boundary = HS_BW_BOUNDARY;



	bw_boundary = get_bw_boundary(udev->speed);

	/* check bandwidth */

	if (min_bw > bw_boundary)

		return -ERANGE;